Mold for cores.



F. HAMILTON.

MOLD F011 comzs APPLICATION FILED 0G 11111111 2.

1,054,541 Patented Feb. l,25, 1913.

NNNNNN OR UNTTED sTATns rnlrnnT orm'cn.

FRANK HAMILToN, or PERTH anmQY. New JERSEY.

MOLD ron comas.

speeineation or Letters Patent.

Application mea nac-oberer, 1912. serial No. 727,639.

- .To all whom it may concern:

Be it known that l, FRANK HAMILTON, a citizen of the'United States, residing at Perth Amboy, in the county of Middlesex and State of New Jersey, have invented a -new and useful lMoldfor Cores, of which the following is a speciiication. n This invention has reference toimprovements in molds for cores, and is designed more especially for the production of cores for the eye ends of sash weights, although applicable to other purposes.

The objectI of the present invention is to provide a core which may be employed for the production of the, eye ends of sash weights wit-hout forming tins or burs m such 'eye and also for the production of a number on the eye end of the sash weightindicative of the amount of `material in the sash weight.

The present invent-ion comprises a mold box of appropriate shape with oppositely disposed ribs designed to define the side members of the eye of thefinished sash weight, and this mold boxfhas' alined passagesfor the reception of a rod 'designed to define the cord holding portion of the eye of the sash weight, while provision is made in the mold box for the reception of an ex- 30 tensible member having patterns thereon agreeable-to the digit or digits representing f the number of poundsof metal ,in the sash weight, the'arrangement being such that the number, producing portionr of the-mold box 35 may be afterward collapsed in a manner to be withdrawn without-interference with the sharpness of the impression.

The invention will be bestunderstood from a considerationof the following de' tailed description, taken in connection with the accompanying drawings forming a part of this specification, with the'further under? standingthat while the drawings illustrate V a practical form 'of the' invention the latter is lby no means limited to any exact conformity with the showing of the drawings -but may be changed and modified so long as such changes and modifications mark no material departure from the salient fea-tures of the invention.

In the drawings Figure 1 isfa'vertical cross section through a mold constructed inv accordance" with the present invention'.

` Fig. 2 is a view substantially at right angles to the section of Fig. 1 with one-half of the mold removed and parts'broken away and 1n section. Fig. 3 is a section on the llne 3 3 of Fig. 1. `ltig. 4 is al fragmentary face view of the interior of one-half of the mold. Fig. 5 is a perspective view of a completed core. Fig. 6 is a perspective view of an extensible and contractible insert for the mold. Fig. 7 is a perspective view 'of the eye end of a sash weight produced by the use of 'the core made in the mold of the present invention. v

In accordance with the present invention there is a mold box made up of two members 1, 2 after the usual practice in the construction of mold boxes, and these mold box lation when brought together by pins 3, as is customary. The interior of each section of the mold box is made hollow, indicated at 4 in Fig. 4, so that when the two sections of the mold box are brought to'- gether there is a passage through the box, which passage may be cylindrical or any other appropriate shape; Each section of 'the mold box at a point about intermediate of its length has formed on the interior a lug 5 projecting` toward the'center line or planeof division of the mold box ina direction substantially toward the other lug when the parts of the mold box areassembled. Each end of each lug is concaved,

Patented Een. 125, 1913.

sections. are caused 'to'assume the proper rel as indicated at 6, and coincident with the concavel portion at one end of the lug each section of the mold box isi formed with a passage 7 through the corresponding wall, these passages alining in the assembled box and being ydesigned for the reception of a rod 8 of any appropriate shape in cross section, but preferably round, and this rod is of suiiicient length to extend entirely across the internal cavity or chamber of the mold box when the parts are assembled,'and it may'be long 'enough to extend beyond the sides of the mold box so that the insertion or removal of the rod is thereby facilitated.

One end of the mold is counter-sunk, as indicated 'at 9, to form a seat, and op '-positely arral'lged grooves 10 -are also pro'- 'vided in the ltwo members ofl the mold at the counter-sunk ends. .Adapted to the counter-sunk end of the mold is an in# sert 11 formed of two members 12, 13, respectivel one of the members, say the member 12. eing formed with spaced ears 14 and the other with an intermediate ear 15 adapted to enter between the ears .14 after the manner of a hinge, and these ears are traversed by a piiitle 15, so that t-lie two members 12 and 13 may be moved apart or together, as desirable. rlhose ends of the members1-2 andI 13 remote from the hinge are enlarged, as indicated at 16and of'segmental shape, the -members 12 and '13 being related to the enlargements or base portions i 16 to meet them at a slight angle. The segments 16 have fiat portions 17 on the faces where thel respective members 12 and 13 join them. 18 adapted to enter between the chord por? tions of the segments 16 andalso enter the grooves 10, and the bar 18 is so related to the segments 16 as to cause these segments to move apart, and when so moved apart s, 13 lodge within the'concavities 6 at the corclear.

responding ends of the lugs The outer faces of the members 12 and 13 each having a suitable number 19 produced .thereon either in relief orl intaglio.

lVhen it is desirable to produce a core, the mold members 1 and 2 are brought together, the'rod 8 is inserted through the passages or holes 7 and the .terminal member 11. is inserted in the other end of the mold from that to `which the passages 7 are adjacent, so that the rounded portion of the hinge connection of the insert engages in the concavities 6 of the lugs 5 at the appropriateends of the latter, and thenv the bar 1S is inserted between the chord faces of the Vsegment 16 forcing them apart with the rounded edges of the segments in the recess 9, thus binding the parts firmly together, while the faces 17 constitute a closure for' the corresponding end of the mold. -No-w, a suitable composi' tion is introduced in to the mold and tamped or otherwise compressed ther Ifn, completely filling the spaces-within the interior of the mold and conforming to the shape of these spaces. As soon as the filled in material has hardened suficiently, 'the bar 18 is Withdrawn allowing the insert to be collapsed, and this will remove the faces of the mem bers 12 and 13 away from those parts of the core with which the tilliiig in material engages, so that the number indications are withdrawn in directions which will prevent` any injury to the impressions and conse quciitly the mold members are sharp and The rod 8 may then be Withdrawn and the parts of the mold separated when there will be found a core 20 similar to that 'lhere'is also provided a bar` illustrated iii Fig. :3. This core is employed in one end of the mold used for the production of sash weights and after the sash weight has been cast the core may be easily broken away, leaving the sash weight with a substantiallysquai'e eye21, see Fig. 7, with the edges which are designed to be engaged byV the sash 4cord round and smooth, while this eyeis connected to t-lie body of the sash weight by expanding faces 22 upon lwhichare produced numbers 23 indicating the weight in pounds of the sash Weight. The number is displayed where most readily visible and, inoreoveigis clear and sharp and not imperfect and obscure as so often occurs iu molded sash weightsl as heretofore produced. The sharpness of the impression by the mold is due to the manner of forming the necessary impression in the core by y the insert 11 which after the molding of the core is collapsed and withdrawn, the directionV of collapse being approximately perpendicular tothe mold surface, so that the mold faces do not distort or otherwise mar the impression-` liy the employment ot' uietal iii the construction of the rod 8 and a iiiie. grainedcom'positon for the core 2O that portion of the eye 21 corresponding to the rod 8 may be extremely smooth and no tins or burs are present anywhere wit-hin the eye portion 21 of the finished sash weight, Wherefore there is no liability of cutting the cords by roughness in the eyes. Moreover, in the ordinary way of molding sashI weights the eyes are often left with tins or burs and many" times these arts must be punched out often'to the estruction of .the sash weights because ofthe extreme brittleness of the metal employed for the casting of sash weights. i

The core may be used for either round or squaresash Weights and the one mold for the core will answer for any size of sash weight, sinceit is merely necessary to substitute an insert 11 having the proper number indication 19.'thei'eon. The round rod 8,.the rounded lugs 5, and the rounded hinge connection of the ytwo arts of the insert make the eye of the finished Weight markedly'smooth and free from any protuberl -ances which would be injurious to the sash cord. Moreover, the means for the formationof the number indicating the wei ht -produces a clear, sharp impression, so tiatdespite the character of the metal employed in casting sash weights, the eye portion and the number indicating portions are smooth and free from the object-ions to these portions of. the sash weight as ordinarily formed. c

It is tobe observed that. the device for spreading out and tightening the,insertop-l crates in .a direction substantial-ly at rightangles to the plane of separation of the accanitil mold box, so that this insert may be ti htly lodged in place. against accidental disp ace- 'ment Without liability of separating the two Vother ends of the lugs and provided on opposite faces with molding means for producing indicia.

2. A mold for the production of cores for casting the eye ends of sash. weights comprising separable members denin an interior chamber, the inner Walls of t e members havin projecting lugs thereon directed one towar Ithe other and having rounded faces and concave ends, the mold members having produced therethrough coincident with one of the concave ends of each luga passage for the reception of a rounded rod,

and an expansiblejand contractible insert for one end of the mold having inclined members hinged togetherl and rounded at one end and at the other end adaptedvto be moved apart or together, and means for expanding the insertand clamping it in the corresponding end of the mold with the rounded hingeportion in .engagement rela' 4tion with the corresponding concave ends of the lugs.

3. A mold for the production of cores for th'e eye ends of sash Weights comprising a core box formed of separable members delining an interior chamber, each core member having an interior lug directed'toward the lug of the other member and with an aperture coincident with one' end of the lug,

i the apertures of the assembled box being in alinement and adapted to receive -a rod, that end of the mold box remote from the apertured portion being counter-sunk, and an insert for the counter-sunk end ofthe mold box comprising two members hinged together at one end and at the other end havmg enlargements adapted to the countersunk portion of the mold box with the 4hinged portion engaging `the corresponding ends of the lugs within the mold box.

4, A mold for the production of cores for the eye ends of sash weights comprising a core box formed of separable members de# ning an interior chamber, each box member havmg an interior. lug directed toward the lug of the other member and with an aperture coincident with one end of the lug, the apertures of the assembled box being in alinement and adapted to receive a rod, that end of the mold box remote from the aperture portion being counter-sunk, and an i11 sert vfor the counter-sunk end of the mold the latter and the box comprising tivo members hinged.y tosunk portion of the mold box with the `hinged' portion engaging the corresponding -ends of the lugs Wit-hin the mold box, the "hinged portions of the insert having indicia mol'dmg means on the faces presented toward the inner Walls of the mold box When the insert is in position.

5; mold for the production of cores for the eye ends of sash Weights comprising a core box formed of separable members de- `i'ning an interior chamber, each box member having an interior lug directed toward the lug of the othermember and With'an aperture coincident with one endy of the lug, the apertures of the assembled box being in alinement and adapted to receive a rod, that end of the mold box remote from the aperture portion being counter-sunk, and an insert for the counter-sunk end of the mold box comprising twov members hinged together at one end and at the other end hav-- ing enlargements. adapted to the countersunk portion of the mold box with tllie hinged portion engaging the correspondi g ends of the lugs Within the mold box,l the hinged portions of the insert having indicia molding meanson the faces presented toward the inner Walls of the mold box when the insert is in position, there also being provided a bar adapted to be placed between themembers' of the insert to expand mold box having grooves therein for the reception of' the bar', said grooves being on. a diameter substantially i perpendicular' to the plane of separation of the members of the mold box.l

6. Almold for the production of cores for the-eye ends of sash Weights comprising a separable mold box denin an interior chamber, means for the proguct-ion of the eye molding portion of the core, and means for the production of the junction port-ion of the eye of the Weight with the body of the Weight comprising an insert for the mold box consistmg of'members hinged 'togetherat one end and at' the other end provided with shouldered enlargements 7. A mold for the production of cores for the eye ends of sash weights comprising a separable mold vbox defining an interior chamber, means for the production of the eye molding portion of the core,and means for the production of the junction portion of the eye of the weight with the body of the 4Weight comprising an insert for 'the mold box consisting of members hinged together at one end and at the other end provided with shouldered enlargements, the said hinged members having reduced on their outer faces means for moiiiing indicia in the core.

8.n a mold for forming cores for the eye ends of sash weights, means for producing in the core mold surfaces for indicial to be produced u on the sash Weight comprising an insert or the mold having surfaces with indicia molding means thereon, said insert eonsisting of members hinged together at one end and at the other end provided with enlargements to constitute a closure for the corresponding end of the core.

9. In a mold for forming cores for the veye ends of sash Weights, meansfor produoing in the core mold surfaces for'indieia to be produced upon a-sas'h Weight comprising an insert for the mold having surfaces with indicia molding means thereon, said insert consisting of members hinged together at one end and at the other end provided with enlargements to constitute :i closure for the. corresponding end of lthe core, the hinged portion of the insert having its edges rounded to form a molding surface on the core corresponding to one portion of the eye of the finished sash Weight.

In testimony` that I claim the foregoing' as my own, I have hereto affixed my signa- 25 

